Document Detail


Streaming potential for microchannels of arbitrary cross-sectional shapes for thin electric double layers.
MedLine Citation:
PMID:  19464020     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
The streaming potential of electrokinetic flows in microchannels affects flow rate and is usually exploited to determine the zeta potential of microchannels. In the present investigation, we derive a semianalytic formula for the streaming potential of microchannels with arbitrary cross-sectional shapes valid for high zeta potentials as well as reasonably low zeta potentials. This formula satisfies the Onsager reciprocity principle at the limit of low zeta potential where the Debye-Hückel approximation is valid. The simple semianalytic formula for the streaming potential derived in the present work can be employed to investigate electrokinetic flows and determine the zeta potentials of microchannels with arbitrary cross-sectional shapes.
Authors:
H M Park; J Y Lim
Publication Detail:
Type:  Journal Article     Date:  2009-04-12
Journal Detail:
Title:  Journal of colloid and interface science     Volume:  336     ISSN:  1095-7103     ISO Abbreviation:  J Colloid Interface Sci     Publication Date:  2009 Aug 
Date Detail:
Created Date:  2009-06-29     Completed Date:  2009-09-02     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0043125     Medline TA:  J Colloid Interface Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  834-41     Citation Subset:  -    
Affiliation:
Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, South Korea. hmpark@sogang.ac.kr
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